Dissolved Gas Analysis (DGA) and moisture measurement of insulating fluids are recognized as the   

most important tests for condition assessment of transformers. In previous years, multi-gas DGA was 

traditionally confined to a laboratory environment, with infrequent off-line manual sampling forming part 

of time-based maintenance strategies. However, as the global average age of transformers continued 

to rise, the possibility of rapid ageing, unplanned outages and even catastrophic failure between off-line 

tests also increased, leading many asset owners to adopt on-line DGA monitoring strategies to increase 

network reliability.

Applications

The Kelman DGA 900 is an invaluable foundational tool for implementing Asset Performance Management 

(APM) across electrical generation, transmission and industry, enabling a condition based asset replacement 

strategy and delivering improvements in system reliability and availability.

A DS-Agile™ and Grid APM ready device, the DGA 900’s wide range of communication methods and 

protocols enables connection to those platforms and integration with GE’s Perception™ transformer fleet 

management software as well as other software, historian and SCADA systems.